blob: 27d82b7cf5736342fb371bf77f679da9f035cd58 [file] [log] [blame]
/** @file
@brief ICMPv4 handler
This is not to be included by the application.
*/
/*
* Copyright (c) 2016 Intel Corporation
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef __ICMPV4_H
#define __ICMPV4_H
#include <zephyr/types.h>
#include <net/net_ip.h>
#include <net/net_pkt.h>
#define NET_ICMPV4_DST_UNREACH 3 /* Destination unreachable */
#define NET_ICMPV4_ECHO_REQUEST 8
#define NET_ICMPV4_ECHO_REPLY 0
#define NET_ICMPV4_DST_UNREACH_NO_PROTO 2 /* Protocol not supported */
#define NET_ICMPV4_DST_UNREACH_NO_PORT 3 /* Port unreachable */
struct net_icmpv4_echo_req {
u16_t identifier;
u16_t sequence;
} __packed;
#define NET_ICMPV4_ECHO_REQ(pkt) \
((struct net_icmpv4_echo_req *)((u8_t *)net_pkt_icmp_data(pkt) + \
sizeof(struct net_icmp_hdr)))
typedef enum net_verdict (*icmpv4_callback_handler_t)(struct net_pkt *pkt);
struct net_icmpv4_handler {
sys_snode_t node;
u8_t type;
u8_t code;
icmpv4_callback_handler_t handler;
};
/**
* @brief Send ICMPv4 error message.
* @param pkt Network packet that this error is related to.
* @param type Type of the error message.
* @param code Code of the type of the error message.
* @return Return 0 if the sending succeed, <0 otherwise.
*/
int net_icmpv4_send_error(struct net_pkt *pkt, u8_t type, u8_t code);
/**
* @brief Send ICMPv4 echo request message.
*
* @param iface Network interface.
* @param dst IPv4 address of the target host.
* @param identifier An identifier to aid in matching Echo Replies
* to this Echo Request. May be zero.
* @param sequence A sequence number to aid in matching Echo Replies
* to this Echo Request. May be zero.
*
* @return Return 0 if the sending succeed, <0 otherwise.
*/
int net_icmpv4_send_echo_request(struct net_if *iface,
struct in_addr *dst,
u16_t identifier,
u16_t sequence);
void net_icmpv4_register_handler(struct net_icmpv4_handler *handler);
void net_icmpv4_unregister_handler(struct net_icmpv4_handler *handler);
enum net_verdict net_icmpv4_input(struct net_pkt *pkt,
u8_t type, u8_t code);
struct net_icmp_hdr *net_icmpv4_get_hdr(struct net_pkt *pkt,
struct net_icmp_hdr *hdr);
struct net_icmp_hdr *net_icmpv4_set_hdr(struct net_pkt *pkt,
struct net_icmp_hdr *hdr);
struct net_buf *net_icmpv4_set_chksum(struct net_pkt *pkt,
struct net_buf *frag);
#if defined(CONFIG_NET_IPV4)
void net_icmpv4_init(void);
#else
#define net_icmpv4_init(...)
#endif
#endif /* __ICMPV4_H */